Internal-combustion engine



March 10, 1925.

c.' F. KETTERING INTERNAL COMBUSTION ENGINE bri imli Filed April 1, 19185 E 5 E H Patented Mar. 10, 1925.

UNITED STATES PATENT OFFICE CHARLES F. KETTERHIG, DAYTON, OHIO, ASSIGNORTO- DELCO-LIGHT COMPANY,

' F DAYTON, OHIO, A CORPORATION OF DELAWARE.

mrnnnnL-oomnosrron ENGINE.

Original application filed Apri1 1, 1918, Serial no. 225,902. Dividedand this application filed harm a,

To all whom it may concern:

Be itknown. that I, CHARLES F. KETTER- JNG, a citizen of the UnitedStates of America, residing at Dayton, county of Montgomery, and Stateof Ohio, have invented certain new and useful Improvements inInternal-Combustion Engines, of which the strnction of the engine.

following is a full, clear, and exact de' scription.

This invention relates to power plants in-' cluding aninternal-combustion engine and has vfor its principal ob ect theprovisions of improvement in the construction of theplant, and moreparticularly in the conlhis application is a division of my copendingapplication Serial No. 225,902, filed April 1st, 1918.

It is an ohiect of the present invention to provide an oil deflectingdevice for preventing oil, which is thrown by oil throwing devices,being carried into the explosion rhambcr'of an engine.

Further objects and advantages ofthe present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings, wherein a preferred form of one embodiment of'the presentinvention is clearly shown. In the drawings: 7

Fig. 1 is a view taken on the flywheel end away for the sake ofclearness; and

Fig. 2 1s a perspective view on a large scale of a' baflie screen.

Referring to the drawings, indicates an internal-combustion, enginehaving a crank case 21 providing a chamber and mounted upon a base 22.Crank case 21 is provided with an end cover 21. A cylinder 23, ismounted upon the crank case, supporting a cylinder head 21, which isrovided with an explosion chamber 25. i l'linder head 2-1 has an inletpassage 26 and an exhaust passage 27 which lead into the explo sionchamber 25. A fiat partition 28 is provided which is apertured and formsa passage for communication between chamber and passages 26 and 27, andwhich serves as a seat forintake valve 29 and exhaust valve 30.

A crankshaft 31 is provided having a crank arm 32 which carries aconnecting rod 33, said connecting rod being connected to a throng 1920.Serial No. 363,440.

piston 34 by means of a pin 35. gear 36 is mounted upon thecrank shaft31, which is adapted to cooperate with an oil throwing gear 37 for thepurpose of throwing oil which is contained within the lower part of thecrank case 21, to the moving parts within the crank case and also thepiston.

.A passage 38 is' rovided in-the crank case 21,wh1'ch leads llltOaabreather tube 39,

the construction of which is clearly described in in above mentionedcopending application. reath'er tube 39 is in direc communication with acasting 40, serving as the end cover for the breather tube and providesa passage from the breather to the intake passage 26, wherebycommunication is obtained between the crank case 21 and the explosivechamber 25.

The entrance to the breather-tube passage is exposed -to the directaction of the splashing within the crank case, and to prevent thepassage of oil out through the breather tube passage, the entrance intothe passage 38 from the crank case 21 is provided with a baiiie 11 whichconsists of a plate provided at one e d with tongues -12 and 3, at itssides with flanges 4A, and with a tongue 45 along the -other end, said.tongues and flanges cooperating with a shoulder formed by the junctionof the breather passage and crank case to hold the baffle 41 inposition.Apertures 46 are pro-- vided and are formed by punching out and bendingover members 417 which then act as deflectors to deflect oil, which issplashed by the'crank arm-and oil throwing ear, there by preventing itfrom passing t rough the passage 38. It will be observed that thedeflectors which are arranged at an'angle to the breather tube passagenot 'only break up the moving oil-laden air but also deflectit laterallyas it enters the passage, thereby suddenly changing its direction ofmovement and tendin to throw down or so arate out the particles of oilwhich then tl dw back into the crankcase by the most con-f venient path.i

When the baflie is parallel to tongue 45 and the deflectors'l so that itcan easily be located in the desired position. While the engine is beingassembled, the baftle can be placed within the openin into the passa e{38by reachi;

the opening in the crank case whic is formed, the tongue 42 is aiterwardcovered by end cover 21; and then .fby reaching through at the u per'endof the passage38, before the breat ier tube is in position, the tongue42 can be bent into a holding osition. Y

It will 0 apparent from the foregoing description, that the quantity ofcrankcase lubricant which enters the combustion chamher will be reducedto avery small value by. c meansof the present invention. The bafiieprevents the direct splashing of excessive quantities of oil into thepassa e 3 8, and alsdseparates to a large degree the 011 mist from theair which 'is forced out of the crank case by the action of the piston.The result is that very little crank case oil will enter the combustionchamber to form a carin combination, an engine cylinder, a crank' shaft,a piston. in thecylinder, a connecting for the piston and crank shaft, acrank case for housmg the crank shaft, said crankcase having anobliquelydisposed upper side wall connected to theScylinder at its upper end andhaving a Passage extending therethrough in the p ane of rotation of thecrank, and a baffle arranged inside said crankcase and across the mouth0'? said passage and 1n the plane of said obliquely disposed wall.

2. In an engine of the character described,-

' incombination, an engine cylinder, a crank case having an obliquelyshaft, a iston in the cylinder, a connecting rod'for te piston and crankshaft, a crank casefor housing thelcrank shaft, said crank *disposedupper side wall connected to the cylinder at its site ends 0 saidb'a-fiie for removably ho-l upper; end Iand havinga passage extendingtherethrough in the plane of rotation of the crank, a bafile disposed.across the mouth of said passage and in the plane of said ohliquely disosedwall, and tongues at 05pm mg the same in position. i

,- 3. In an engine of the character described, 1n comb1nat1on, an enginecylinder, a crankshaft, a piston in the cylinder, a connecting rod forthe piston and crank shaft, a crank case for housing ti 1 crankshafhgaid crank case having an obliquely disposed upper side wallconnected to the cylinder at its upper end and havinga passage extendingtherethrough in the lane of rotation of the crank, a bafile isposedacross the mouth of said passage and in the plane of saidobliquelydisposed wall, and means including a plurality of tongues atone-end, of the baflie for engaging the interior walls of the crank caseand said passage to hold the bathe in position.

I 4. In an engine of the character described, in combination, an engmecylinder and cylinder head having an engine intake passage,

a piston in the cylinder, an engine crank case containing a lubricantadapted to be splashed about therein,. a crank shaft journaled therein,a connectin rod for the piston and crank, shaft, a breat 1er passagethrough the wall of the crank case and connecting the interior thereofwith the intake passage, and

a bafile located inside said crankcase and within the opening leadingtherefrom into said breather passage.

5. In an engine of the character described, in combination, an enginecylinder, a crank case thereforya breather passage through the wall ofthe crank case, a bafile for the breather passage arranged inside thecrankcase and within the opening leading therefrom into said breatherpassage, said baflle having a lurality of tongues on its pcripheral e gofor holding the bafiie in operative position.

6. In an engine of the character described,- 1n combination, an enginecylinder, a crank.

case-therefor, a breather passage through the wall of the crankcase, abaffle for the breather passage, said baflle having tongues-v atopposite ends thereof and adapted to engage the wall of the crank casefor holding the baiile in position. i 4

7. In an engine of the character described, in combination, an engine,cylinder, a crank case therefor, a breatheupassage through :thewall ofthe crank case, a bafl'le for the breather passage, said baiile havingtongues at opposite ends thereof and upturned flanges at the side edgesthereof, adapted to-.

engage said crank case and said breather passage for holding the bafilein operative position. 4 a

In testimony whereof I afiix my signature.

7 oHARLEsr; KETTEBI NG. Witnesses:

Mimi-inn PEABE,

H LEN Lnr'ron,

